CN217381054U

CN217381054U - Novel single-tube jet pump device

Info

Publication number: CN217381054U
Application number: CN202123216908.0U
Authority: CN
Inventors: 冯辉; 汪超; 刘焱; 刘振浩
Original assignee: Shengli Oilfield Longdi Petroleum Technology Equipment Co ltd
Current assignee: Shengli Oilfield Longdi Petroleum Technology Equipment Co ltd
Priority date: 2021-12-21
Filing date: 2021-12-21
Publication date: 2022-09-06
Anticipated expiration: 2031-12-21

Abstract

The utility model provides a novel single tube jet pump device belongs to an oil field oil gas exploitation device the pump head below be connected with the pump core section of thick bamboo of going up of extension, go up and be connected with the well pump core section of thick bamboo that the external diameter reduces and inside concave yield below the pump core section of thick bamboo, be connected with down the pump core section of thick bamboo below the well pump core section of thick bamboo, the lower extreme of well pump core section of thick bamboo has the nozzle, there is the choke relative with the nozzle in the upper end of a lower pump core section of thick bamboo, well pump core section of thick bamboo, there is the hybrid chamber between the lower pump core section of thick bamboo, there is mixed liquid export at the middle part of a lower pump core section of thick bamboo, the lower extreme of a lower pump core section of thick bamboo is the tailstock, the pump cylinder hypomere has the stratum liquid passageway that the sectional area enlarges, there is export and mixed liquid export on the pump section of thick bamboo and communicates with each other. The jet pump device is reasonable in structure, effectively solves the problem that the existing single-tube jet pump is too large in outer diameter and cannot be applied to small-size sleeves, and improves the pump efficiency under the same overall dimension.

Description

Novel single-tube jet pump device

Technical Field

The utility model relates to an oil field oil gas exploitation device, especially a single tube jet pump device.

Background

In recent years, in the process of oil and gas field exploitation, the jet pump oil extraction process is concerned due to the characteristics of no moving part, no eccentric wear of a pipe rod, simultaneous gas and liquid exploitation, no airlock and the like. In the existing jet pump oil extraction process, a concentric double-pipe jet pump is widely applied. However, the application of the concentric double-pipe jet pump also has certain limitations. Firstly, when using on the ultra-deep well, concentric double-barrelled tubular column causes the first outer oil pipe that hangs the oil pipe tubular column to receive tensile force great because of length is big, causes the fracture of this oil pipe easily, and the factor of safety of production is lower. Meanwhile, due to the adoption of a concentric double-pipe structure, the outer diameters of the jet pump and the pipe column are too large to be suitable for the well condition of a small-diameter casing pipe. And secondly, when the concentric double-pipe jet pump is applied to a small-diameter casing gas well, the concentric double-pipe jet pump is complex in structure, the channel area is relatively small under the same overall dimension, and the pumping efficiency is relatively low. When the existing single-tube jet pump is applied, although the structure is simple and the flow is simplified, the overall dimension is larger due to the pursuit of high liquid yield, and the vertical overall dimensions of the pump core are consistent, so that the existing single-tube jet pump cannot be applied to a small-size casing gas well.

Disclosure of Invention

The utility model aims to solve the technical problem that a novel single tube jet pump device is provided, it can be applied to minor diameter sleeve pipe oil gas well to improve the jet pump efficiency.

The utility model is realized in such a way, a novel single-tube jet pump device comprises a pump cylinder and a single-tube jet pump core arranged at the inner side of the pump cylinder, wherein the single-tube jet pump core is provided with a pump head with a liquid inlet channel, an elongated upper pump core cylinder is connected below the pump head, a middle pump core cylinder with a reduced outer diameter and an inward concave part is connected below the upper pump core cylinder, a lower pump core cylinder is connected below the middle pump core cylinder, the lower end of the middle pump core cylinder is provided with a nozzle, the upper end of the lower pump core cylinder is provided with a throat pipe opposite to the nozzle, a mixing cavity is arranged between the middle pump core cylinder and the lower pump core cylinder, the nozzle and the throat pipe are positioned in the mixing cavity, the middle part of the lower pump core cylinder is provided with a mixed liquid outlet, the lower end of the lower pump core cylinder is a tailstock, the middle pump core cylinder and the lower pump core cylinder are arranged in the pump cylinder, a first sealing ring is arranged between the middle pump core cylinder and the pump cylinder, a second sealing ring is arranged between the lower pump core cylinder and the tailstock pump cylinder is provided with a third sealing ring, the lower section of the pump cylinder is provided with a stratum fluid channel with an enlarged sectional area, the lower part of the pump cylinder is provided with a fixed ball valve, and an outlet on the pump cylinder is communicated with a mixed liquid outlet.

The single-tube jet pump device adopting the structure is reasonable in structure, effectively solves the problems that the existing single-tube jet pump is large in outer diameter and cannot be suitable for small-size casing pipes, can be applied to small-diameter casing pipe oil-gas wells, and realizes the lifting process of the single-tube jet pump. And the structure is compact, the flow is simple, and the pump efficiency is improved under the same overall dimension.

Drawings

Fig. 1 is a schematic diagram of a conventional single-tube jet pump apparatus structure.

Fig. 2 is a schematic diagram of the single-tube jet pump structure of fig. 1.

Fig. 3 is a schematic diagram of the structure of the single-tube jet pump device of the present invention.

Fig. 4 is a schematic diagram of the single-tube jet pump structure of fig. 3.

In the figure, 1, a sleeve; 2. an oil pipe; 3. a pump head; 4. a pump barrel; 5. a mixing chamber; 6. a formation fluid passage; 7. fixing the ball valve; 8. a first seal ring; 9. a nozzle; 10. a throat; 11. a second seal ring; 12. a third seal ring; 13. an upper pump core cylinder; 14. a middle pump core cylinder; 15. a lower pump core barrel; 16. a tailstock; 17. a lower section of the pump cylinder; 18. a mixed liquid outlet; 19. an outlet; 20. and a liquid inlet channel.

Detailed Description

The present invention will be further explained with reference to the following embodiments shown in the drawings.

As shown in the attached drawing, the utility model relates to a novel single tube jet pump device, including pump barrel 4, the pump barrel inboard has single tube jet pump core on have the pump head 3 of taking into liquid passageway 20 pump head below be connected with elongated last pump core section of thick bamboo 13, be connected with the well pump core section of thick bamboo 14 that the external diameter reduces and inside concave yield under going up the pump core section of thick bamboo, be connected with down pump core section of thick bamboo 15 under the well pump core section of thick bamboo, the lower extreme of well pump core section of thick bamboo has nozzle 9, the upper end of down pump core section of thick bamboo has the choke 10 relative with the nozzle, there is mixing chamber 5 between well pump core section of thick bamboo, the down pump core section of thick bamboo, nozzle, choke are located the mixing chamber, there is mixed liquid export 18 in the middle part of down pump core section of thick bamboo, the lower extreme of down pump core section of thick bamboo is 16, well pump core section of thick bamboo, down pump core section of thick bamboo, the pump core section of thick bamboo, install in pump core section of thick bamboo, well pump core section of thick bamboo and pump barrel between have first sealing washer 8, down pump core and pump barrel between have second sealing washer 11, A third sealing ring 12 is arranged between the tailstock and the pump cylinder, a stratum liquid channel 6 with an enlarged sectional area is arranged at the lower section 17 of the pump cylinder, a fixed ball valve 7 is arranged at the lower part of the pump cylinder, and an outlet 19 on the pump cylinder is communicated with a mixed liquid outlet.

Like the existing single-pipe jet pump device, the jet pump core of the single-pipe jet pump device is put into the oil pipe 2, the lower end of the oil pipe is fixed with the pump barrel 4 and enters the underground production part, and the pump head and the upper pump core barrel are positioned in the oil pipe 2. Obviously, a packer should be provided outside the lower part of such a single-tubing jet pump device, which packer separates the tubing from the casing 1. In the production process, power fluid enters from an oil pipe, formation fluid enters a mixing cavity through a fixed ball valve and a formation fluid channel 6 and is mixed with the power fluid to form mixed liquid, and the mixed liquid returns to the ground from the oil pipe and the annular space of the casing. The installation, the use method and the working principle of the single-pipe jet pump device are basically the same as those of the existing single-pipe jet pump device.

After the upper pump core barrel is lengthened, the guiding and centering effect can be improved, and the single-tube jet pump core can be ensured to smoothly start and stop through hydraulic force in the oil tube. The outer diameters of the middle pump core cylinder 14 and the lower pump core cylinder 15 are reduced and are recessed inwards. After the external diameter size is reduced, under the prerequisite of guaranteeing whole device intensity, increased the sectional area of formation liquid passageway 6 for formation liquid gets into the hybrid chamber more easily, has improved jet pump's pumping efficiency.

The terms "upper", "middle", "lower", "inner" and "outer" refer to the orientation in the use state, and are for convenience of description only and should not be construed as limiting the present invention. The arrows in the drawing indicate the liquid flow direction.

The present invention is not described in detail, and is the prior art.

The above-mentioned embodiments are only one of the preferred embodiments of the present invention, and the general changes and substitutions performed by those skilled in the art within the technical scope of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a novel single tube jet pump device, has single tube jet pump core including pump barrel (4), pump barrel inboard, its characterized in that single tube jet pump core on have pump head (3) of taking into liquid passageway (20) the pump head below be connected with lengthened last pump barrel (13), go up and be connected with the external diameter below the pump barrel and reduce and well pump barrel (14) of inside concave yield, be connected with down pump barrel (15) below the well pump barrel, the lower extreme of well pump barrel has nozzle (9), the upper end of lower pump barrel has choke (10) relative with the nozzle, there is hybrid chamber (5) between well pump barrel, the lower pump barrel, nozzle, choke are located the hybrid chamber, there is mixed liquid export (18) at the middle part of lower pump barrel, the lower extreme of lower pump barrel is tailstock (16), well pump barrel, lower pump barrel install in pump barrel (4), well pump barrel and pump barrel between have first sealing washer (8), A second sealing ring (11) is arranged between the lower pump core cylinder and the pump cylinder, a third sealing ring (12) is arranged between the tailstock and the pump cylinder, a stratum liquid channel (6) with an enlarged sectional area is arranged on the lower section (17) of the pump cylinder, a fixed ball valve (7) is arranged on the lower part of the pump cylinder, and an outlet (19) on the pump cylinder is communicated with the mixed liquid outlet.